Features
+ Support two SIP carrier
+ Support IAX2, SIP RFC3261 ,RFC2543
+ Codec : G.711A/u, G.7231 high/low, G.729
+ Support three way conference call and voice record
+ Echo cancellation: Support G.168 and Hands-free can support 96ms; Hand free Speaker
Phone
+ Support Voice Gain Setting, Jitter Buffer, VAD, CNG.
+ Support STUN client,support VPN
+ SIP support SIP domain, SIP authentication ,DNS name of server, Peer to Peer
+ SIP support Pubic & Private server. Can connect to ISP and Private SIP server synchronously.
+ DTMF: Support SIP info, DTMF Relay, RFC2833
+ Call service: support Call forward/transfer/hold call waiting / no disturb/ back list/ ban
outgoing / hotline/ Speed Dialing/out-limit /caller id/redial
+ Call control features: Flexible dial map/flexible and useful dial rule
+ Support Phonebook 100 record
+ Call history :Incoming calls / Outgoing calls / Missing calls,Each support 100 record.
+ Support auto update
+ Support QOS , support VLAN , DiffServ
+ Language English, Spanish, Czechoslovak alternative. language custom-tailor
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